// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
#define CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_

#include <string>

#include "base/callback_forward.h"
#include "content/public/common/speech_recognition_error.h"

namespace content {

class SpeechRecognitionEventListener;

// Allows embedders to display the current state of recognition, for getting the
// user's permission and for fetching optional request information.
class SpeechRecognitionManagerDelegate {
public:
    virtual ~SpeechRecognitionManagerDelegate() { }

    // Checks (asynchronously) if current setup allows speech recognition.
    // This is called on the IO thread.
    virtual void CheckRecognitionIsAllowed(
        int session_id,
        base::Callback<void(bool ask_user, bool is_allowed)> callback)
        = 0;

    // Checks whether the delegate is interested (returning a non nullptr ptr) or
    // not (returning nullptr) in receiving a copy of all sessions events.
    // This is called on the IO thread.
    virtual SpeechRecognitionEventListener* GetEventListener() = 0;

    // Checks whether the speech recognition for the given renderer should filter
    // profanities or not.
    virtual bool FilterProfanities(int render_process_id) = 0;
};

} // namespace content

#endif // CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
